WX 301 Exam 1 ACTUAL Exam Questions
and CORRECT Answers
Why is a direct comparison of station pressures difficult? - CORRECT ANSWER - Weather
stations are often at different altitudes
You're flying in Europe and the altimeter setting is reported as 988mb. What is the altimeter
setting in inches Hg? Recall 1013.2mb ~ 29.92 "Hg - CORRECT ANSWER - 29.17"Hg
Altimeter setting and sea level pressure (SLP) both provide estimates of the pressure at a station
if that station were lowered all the way to mean sea level? - CORRECT ANSWER - True
Altimeter setting and sea level pressure (SLP) are calculated the same way and provide the same
value, just in different units (inches mercury versus millibars). - CORRECT ANSWER - False
The aneroid barometer at your station reads 27.57"Hg. If the station elevation is 2,000ft, what is
the altimeter setting?
(image 1) - CORRECT ANSWER - 29.65" Hg
For the same station as above, what is the altimeter setting if your station pressure is 27.32"Hg?
(image 1) - CORRECT ANSWER - 29.38" Hg
At what Pressure Altitude (PA) does 27.32"Hg occur?
(image 2) - CORRECT ANSWER - 2,500 ft MSL
If your station elevation is 1,250ft MSL and your altimeter setting is 30.19"Hg, what is the
pressure altitude at the station (i.e., the surface PA)?
(image 3) - CORRECT ANSWER - 1,000 ft MSL
,What is the PA conversion factor for question 8, i.e., how much height must you add to the
station elevation to get the surface PA?
(image 3) - CORRECT ANSWER - -250 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if the
altimeter setting was instead being reported as 29.65 "Hg?
(image 3) - CORRECT ANSWER - 1,500 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if the
altimeter setting was instead being reported as 29.65 "Hg?
(image 3)
What is the new PA conversion factor for the above question? - CORRECT ANSWER - +250
ft MSL
In general, as the station pressure falls, what happens to the surface PA? - CORRECT
ANSWER - The surface PA rises
You're flying in Class A airspace (FL180 and above) where PA is always used instead of true
altitude (i.e., your Kollsman window remains set to 29.92"Hg). While descending you fail to
review your checklist and forget to adjust your Kollsman window to the current altimeter setting
of 29.67 "Hg. What will the altimeter read (approximately) at touchdown if the station elevation
of the airport is 865 ft? (Assume 1"Hg = 1,000ft) - CORRECT ANSWER - 1,115 ft
Using the Standard Conversion Chart, third column (Appendix B in Aviation Weather Services,
Advisory Circular 00-45H, Ch1), what is the pressure altitude of the 505mb surface? -
CORRECT ANSWER - 18,000 ft MSL
You're parked on the ramp at your favorite airport. You adjust the Kollsman window on your
pressure altimeter to standard sea-level pressure (29.92"Hg). What altitude does your pressure
altimeter read? - CORRECT ANSWER - Pressure altitude
, You're parked on the ramp at your favorite airport. You adjust the Kollsman window on your
pressure altimeter to the current altimeter setting being broadcast on ATIS. What altitude should
your pressure altimeter read? - CORRECT ANSWER - Airport (ramp) elevation
If the Kollsman window on your pressure altimeter is set to 30.15"Hg but the actual altimeter
setting is 29.50"Hg, then your true altitude will be _______ than the indicated altitude. -
CORRECT ANSWER - Lower than
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual altimeter
setting is 30.40"Hg, then your true altitude will differ from your indicated altitude by
approximately: (Hint: Pressure in the lower troposphere changes about 1000ft per 1"Hg) -
CORRECT ANSWER - 500 ft
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual altimeter
setting is 30.40"Hg, then your true altitude will differ from your indicated altitude by
approximately: (Hint: Pressure in the lower troposphere changes about 1000ft per 1"Hg)
500 ft
Will the true altitude be higher or lower than the indicated altitude? - CORRECT ANSWER -
Higher
You're flying at an indicated altitude of 3,000 feet MSL over a region where there is a strong
high-pressure area at the surface. The altimeter setting is 30.42"Hg but the Kollsman window of
your altimeter is only set at 30.17 "Hg. Estimate your true altitude. - CORRECT ANSWER -
3,250 ft MSL
Density altitude can be thought of as the pressure altitude corrected for: - CORRECT
ANSWER - Temperatures that are different from standard
If your altimeter setting is 29.80"Hg and your station elevation is 2,388ft MSL, use the DA chart
to determine your density altitude if the temperature is 75oF.
(image 4) - CORRECT ANSWER - 4,000 ft MSL
and CORRECT Answers
Why is a direct comparison of station pressures difficult? - CORRECT ANSWER - Weather
stations are often at different altitudes
You're flying in Europe and the altimeter setting is reported as 988mb. What is the altimeter
setting in inches Hg? Recall 1013.2mb ~ 29.92 "Hg - CORRECT ANSWER - 29.17"Hg
Altimeter setting and sea level pressure (SLP) both provide estimates of the pressure at a station
if that station were lowered all the way to mean sea level? - CORRECT ANSWER - True
Altimeter setting and sea level pressure (SLP) are calculated the same way and provide the same
value, just in different units (inches mercury versus millibars). - CORRECT ANSWER - False
The aneroid barometer at your station reads 27.57"Hg. If the station elevation is 2,000ft, what is
the altimeter setting?
(image 1) - CORRECT ANSWER - 29.65" Hg
For the same station as above, what is the altimeter setting if your station pressure is 27.32"Hg?
(image 1) - CORRECT ANSWER - 29.38" Hg
At what Pressure Altitude (PA) does 27.32"Hg occur?
(image 2) - CORRECT ANSWER - 2,500 ft MSL
If your station elevation is 1,250ft MSL and your altimeter setting is 30.19"Hg, what is the
pressure altitude at the station (i.e., the surface PA)?
(image 3) - CORRECT ANSWER - 1,000 ft MSL
,What is the PA conversion factor for question 8, i.e., how much height must you add to the
station elevation to get the surface PA?
(image 3) - CORRECT ANSWER - -250 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if the
altimeter setting was instead being reported as 29.65 "Hg?
(image 3) - CORRECT ANSWER - 1,500 ft MSL
For the same station as in question 8 and 9, above, what would be the new surface PA if the
altimeter setting was instead being reported as 29.65 "Hg?
(image 3)
What is the new PA conversion factor for the above question? - CORRECT ANSWER - +250
ft MSL
In general, as the station pressure falls, what happens to the surface PA? - CORRECT
ANSWER - The surface PA rises
You're flying in Class A airspace (FL180 and above) where PA is always used instead of true
altitude (i.e., your Kollsman window remains set to 29.92"Hg). While descending you fail to
review your checklist and forget to adjust your Kollsman window to the current altimeter setting
of 29.67 "Hg. What will the altimeter read (approximately) at touchdown if the station elevation
of the airport is 865 ft? (Assume 1"Hg = 1,000ft) - CORRECT ANSWER - 1,115 ft
Using the Standard Conversion Chart, third column (Appendix B in Aviation Weather Services,
Advisory Circular 00-45H, Ch1), what is the pressure altitude of the 505mb surface? -
CORRECT ANSWER - 18,000 ft MSL
You're parked on the ramp at your favorite airport. You adjust the Kollsman window on your
pressure altimeter to standard sea-level pressure (29.92"Hg). What altitude does your pressure
altimeter read? - CORRECT ANSWER - Pressure altitude
, You're parked on the ramp at your favorite airport. You adjust the Kollsman window on your
pressure altimeter to the current altimeter setting being broadcast on ATIS. What altitude should
your pressure altimeter read? - CORRECT ANSWER - Airport (ramp) elevation
If the Kollsman window on your pressure altimeter is set to 30.15"Hg but the actual altimeter
setting is 29.50"Hg, then your true altitude will be _______ than the indicated altitude. -
CORRECT ANSWER - Lower than
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual altimeter
setting is 30.40"Hg, then your true altitude will differ from your indicated altitude by
approximately: (Hint: Pressure in the lower troposphere changes about 1000ft per 1"Hg) -
CORRECT ANSWER - 500 ft
If the Kollsman window on your pressure altimeter is set to 29.90 "Hg but the actual altimeter
setting is 30.40"Hg, then your true altitude will differ from your indicated altitude by
approximately: (Hint: Pressure in the lower troposphere changes about 1000ft per 1"Hg)
500 ft
Will the true altitude be higher or lower than the indicated altitude? - CORRECT ANSWER -
Higher
You're flying at an indicated altitude of 3,000 feet MSL over a region where there is a strong
high-pressure area at the surface. The altimeter setting is 30.42"Hg but the Kollsman window of
your altimeter is only set at 30.17 "Hg. Estimate your true altitude. - CORRECT ANSWER -
3,250 ft MSL
Density altitude can be thought of as the pressure altitude corrected for: - CORRECT
ANSWER - Temperatures that are different from standard
If your altimeter setting is 29.80"Hg and your station elevation is 2,388ft MSL, use the DA chart
to determine your density altitude if the temperature is 75oF.
(image 4) - CORRECT ANSWER - 4,000 ft MSL
